[Colonic rectal hemorrhage].
D001706:Biopsy; D003108:Colonic Diseases / Q000175:diagnosis*; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006801:Humans; D012002:Rectal Diseases / Q000175:diagnosis*; D012812:Sigmoidoscopy
Hemorragias colorrectales.